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How to kill a process initiated by another user, who is in same group as me?

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What's wrong with kill -15 PID? – Bobby Feb 18 '11 at 12:07
@Bobby permission denied – user48777 Feb 18 '11 at 12:12
Okay, let me rephrase that: What's wrong with [sudo|su|impersonate other user] kill -15 PID? Just because you're in the same group, doesn't mean that you're allowed to touch his belongs – Bobby Feb 18 '11 at 12:16

As Bobby already mentioned in comments, being in same group do not allow you to kill process.

Try running

sudo kill PID

where PID is process identifier of that process.

If you do not have sudo access (or root password), you are out of luck.

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